Anti-fatigue mat



FIG. 1 is a perspective view of an anti-fatigue mat showing my design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a side elevation view thereof, the opposite side elevation being identical.

The broken lines showing of a pattern formed by a series of horizontal bars are for purpose of illustrating environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for an anti-fatigue mat, as shown and described. 